RUI: Is the CLMSZ an Early Cretaceous Extensional Accomodation Zone?

RUI：CLMSZ 是早白垩世伸展适应区吗？

• 批准号: 9115408
• 负责人: Gary Girty
• 金额: $ 6.22万
• 依托单位: San Diego State University Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-01-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115408&HistoricalAwards=false
• 关键词: RUI; CLMSZ; Early; Cretaceous; Extensional

The late Jurassic to early Cretaceous history of the Peninsular Ranges, California is thought to involve collision of an oceanic arc with cratonic North America, collapsing a sedimentary basin between. However, a prominent shear zone thought to record this collision has been shown to involve rocks of too young an age and has extensional, not contractional kinematics. This project will involve detailed mapping of the Cuyamaca- Laguna Mountains shear zone, study of oriented samples and radiometric age dating. Results should provide a test of the collisional model for the late Jurassic to early Cretaceous of the Peninsular Ranges.

晚侏罗世至早白垩世的历史 加州半岛山脉被认为与 一个与大西洋北美洲相连的海洋弧， 沉积盆地之间。 然而，一个突出的剪切带认为， 记录这次碰撞的岩石 年轻的年龄，并有伸展，而不是收缩运动。 该项目将涉及库亚马卡的详细地图绘制， 拉古纳山脉剪切带，定向样品研究， 放射性年龄测定法 结果应提供一个测试， 晚侏罗世-早白垩世碰撞模式 半岛山脉